package com.lanou3g.HW_0522.common;

// 常量类
public final class Constant {
    /*
    session 相关
    内部类,在一个类里 装着其他类
     */
    public static final class Session {
        public static final String USER = "user";
    }

    public  static final class Request{
        public static final String USER_MSG="msg";
    }
}
